Home / 9,660.04-13,319.56-8,960.20

Finding the Fourth Proportional to 9,660.04, 13,319.56 and 8,960.20

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Solution

The fourth proportional to 9,660.04, 13,319.56 and 8,960.20 is: 12,354.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,660.04 : 13,319.56 = 8,960.20 : x
  2. Step 2: Convert to fraction form
    9,660.04/13,319.56 = 8,960.20/x
  3. Step 3: Cross multiply
    9,660.04x = 13,319.56 × 8,960.20
  4. Step 4: Simplify right side
    9,660.04x = 119,345,921.51
  5. Step 5: Solve for x
    x = 119,345,921.51/9,660.04
  6. Step 6: Final answer
    x = 12,354.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.